From 596d696a5d0e066f2ed4bd6b0e40dedd52513c7c Mon Sep 17 00:00:00 2001 From: Gregory Herrero Date: Fri, 9 Jan 2015 13:39:08 +0100 Subject: [PATCH] usb: dwc2: gadget: add vbus_draw support This callback informs the driver about the total amount of current it is allowed to draw. Share this information with the phy so that current limits can be set for charging for example. Tested-by: Robert Baldyga Acked-by: Paul Zimmerman Signed-off-by: Gregory Herrero Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2719d48c73df..f47770940a7a 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3053,12 +3053,29 @@ static int s3c_hsotg_vbus_session(struct usb_gadget *gadget, int is_active) return 0; } +/** + * s3c_hsotg_vbus_draw - report bMaxPower field + * @gadget: The usb gadget state + * @mA: Amount of current + * + * Report how much power the device may consume to the phy. + */ +static int s3c_hsotg_vbus_draw(struct usb_gadget *gadget, unsigned mA) +{ + struct dwc2_hsotg *hsotg = to_hsotg(gadget); + + if (IS_ERR_OR_NULL(hsotg->uphy)) + return -ENOTSUPP; + return usb_phy_set_power(hsotg->uphy, mA); +} + static const struct usb_gadget_ops s3c_hsotg_gadget_ops = { .get_frame = s3c_hsotg_gadget_getframe, .udc_start = s3c_hsotg_udc_start, .udc_stop = s3c_hsotg_udc_stop, .pullup = s3c_hsotg_pullup, .vbus_session = s3c_hsotg_vbus_session, + .vbus_draw = s3c_hsotg_vbus_draw, }; /** -- 2.20.1